There are some nice ground floor patio rooms right by the pool, though you might want to ask at check in about the noise level. I know some of the ground floor rooms are handicapped accessible, so I don't know how easy it is to get one if you aren't disabled in some way.
If you request anything at the dolphin that is doable.....it will be done , being a starwood resort they really take pride in making special request happen if at all possible......gosh I love that resort sooooooo much. Have fun.